Glory-Bound Initiate
{1}{W}
Creature -- Human Warrior
3/1
You may exert ~this~ as it attacks. When you do, it gets +1/+3 and gains lifelink until end of turn. (An exerted creature won't untap during your next untap step.)
Prepare // Fight
{1}{W} // {3}{G}
Instant // Sorcery
Untap target creature. It gets +2/+2 and gains lifelink until end of turn.
//
Aftermath (Cast ~this~ only from your graveyard. Then exile it.)
Target creature you control fights target creature an opponent controls.